Dhuhr prayer consists of four mandatory or fard rakahs or 4 single units of prayer, Before the mandatory unit of prayer, there is four rakah units of sunnah or voluntary prayers and after the mandatory unit of prayer, two additional rakahs of prayer are generally offered as well.
(Fajr means dawn in the Arabic language.) The five daily prayers collectively form one pillar of the Five Pillars of Islam, in Sunni Islam, and one of the ten Practices of the Religion (Furū al-Dīn) according to Shia Islam. The Fajr prayer is mentioned by name in the Qur'an at sura 24 ayah.
Although Qays had not prayed the sunnah prayer, he joined the Prophet, Sall-Allahu alayhi wa sallam, and prayed with him. When he had finished salat al-Fajr, he prayed the two rak'ahs (sunnah) prayer. The Messenger of Allah passed by him and inquired: "What is this prayer?" Qays then informed him of all that had happened.